How many registers should the PDP-11 have?

How many registers should the PDP-11 have?

In other words, the byte ordering was little endian. The top 4096 words in the memory space (from 177777 downwards) were reserved for the system, giving 28,672 words for programming. The PDP-11 had 8 16-bit registers that could be used by the programmer.

What is the maximum physical address on a PDP-11?

The physical address space was extended to 18 or 22 bits, hence allowing up to 256 KB or 4 MB of RAM.

Is PDP-11 is a supercomputer?

The PDP-11 is a series of 16-bit minicomputers sold by Digital Equipment Corporation (DEC) from 1970 into the 1990s, one of a set of products in the Programmed Data Processor (PDP) series. In total, around 600,000 PDP-11s of all models were sold, making it one of DEC’s most successful product lines.

How many registers should the PDP 10 have?

There are 16 general-purpose, 36-bit registers. The right half of these registers (other than register 0) may be used for indexing. A few instructions operate on pairs of registers.

How much was PDP-11?

The venerable PDP-11 is still spry to this day, powering a GE nuclear power-plant robotic applications — and will do so until 2050! That’s right! The first model of PDP-11, (priced 20000 USD), named PDP-11/20, was shipped in the spring of 1970.

What happened Digital Equipment Corporation?

DEC was acquired in June 1998 by Compaq in what was at that time the largest merger in the history of the computer industry. During the purchase, some parts of DEC were sold to other companies; the compiler business and the Hudson, Massachusetts facility, were sold to Intel.

Who invented PDP-11 computer?

Digital Equipment Corporation
PDP-11/Inventors

It seems however that the designed by de Castro PDP-X has little relationship to DEC’s eventual 16-bit architecture, the PDP-11. Gordon Bell, the vice president of research in DEC, was involved with recommending what became the PDP-11, while the actual design was made by Harold McFarland.

Is Cray one a supercomputer?

The Cray-1 was a supercomputer designed, manufactured and marketed by Cray Research. Announced in 1975, the first Cray-1 system was installed at Los Alamos National Laboratory in 1976. Eventually, over 100 Cray-1s were sold, making it one of the most successful supercomputers in history….

What type of computer is PDP 10?

Mainframe computer
PDP-10

How many registers should the PDP-11 have? In other words, the byte ordering was little endian. The top 4096 words in the memory space (from 177777 downwards) were reserved for the system, giving 28,672 words for programming. The PDP-11 had 8 16-bit registers that could be used by the programmer. What is the maximum physical…